import java.io.IOException;

//对异常的理解
//throw 抛出异常
public class tset {
    public static void td() throws IOException {
        throw new IOException("错误");
    }
//    public static void main(){
//        try{
//            td();
//        }catch (IOException){
//
//        }
public static void main(String[] args){
    try {
        td();
} catch (IOException e) {
        throw new RuntimeException(e);
    }finally {
        System.out.println("sssd");
    }
}
}